I'm trying to install a PNY GeForce 9500GT (Nvidia) on a Dell GX620 (P4 HT 3.4Ghz), running XP. I first tried to install it on a Dell Optiplex 745 (P4 D 3.4Ghz) running Windows 7 64-bit. Both give the same results after installing the card, then drivers, and reboot. I get a blank screen on the Win7 machine and a broken graphics screen after the Windows logo on the XP machine. I've tried the latest drivers from Nvidia (301.42) and the beta drivers from Techspot (304.79) to have the same problem. I think the card is conflicting with the on board GPU, Intel 945G chipset. I'm trying to find a way to disable the on board GPU. When I looked at the Resources I get this message: Input/Output Range 03B0 - 03BB used by: Intel(R) 945G/GZ/P/PL PCI Express Root Port - 2771 Input/Output Range 03C0 - 03DF used by: Intel(R) 945G/GZ/P/PL PCI Express Root Port - 2771 Memory Range 000A0000 - 000BFFFF used by: Intel(R) 945G/GZ/P/PL PCI Express Root Port - 2771 I've tried to disable the Display Adapter in Device Manager before installing the card, to no avail. I really want to install this card so I can run two monitors. Any Ideas?